Dual voltage relay RNPP-311-2

Dual voltage relay RNPP-311-2 is a modification of a standard relay RNPP-311.

Designed to control the three-phase 380V / 50Hz and signaling polnofaznosti unbalance and phase failure.

Unlike standard RNPP-311 , does not carry out the alternation control, adhesion, and phase unbalance.

It has two independent output channels:

• Channel 1 Indicates failure of all three phases in a network of 380 V / 50 Hz and / or exit of all phases of the thresholds;
• Channel 2 Signals the failure of one and / or two-phase network 380 V / 50 Hz and / or exit of their thresholds.